Permit Required? Required
Typical Fee Range $1,000–$4,000 Includes building, zoning, and utility capacity fees.
Fee Method Valuation-based
Apply Online Apply at Department of Safety and Permits →

What's Required in New Orleans

  • Building permit required for all secondary dwelling units.
  • Must contain independent cooking, sleeping, and sanitation facilities.
  • Requires professional architectural plans including foundation.
  • Must meet lot coverage and setback rules for the zoning district.
  • Owner-occupancy of the property is a mandatory requirement.
  • Must follow all flood elevation requirements for the specific lot.

How to Get a ADU Permit in New Orleans

1

Step 1: Zoning Verification

Confirm an ADU is allowed on your lot via DSP Planning.

2

Step 2: Design Documents

Prepare detailed site plans and architectural drawings.

3

Step 3: Submit Portal

Apply for a New Accessory Structure permit online.

4

Step 4: Multi-Agency Review

Checked by Building, Zoning, and Fire departments.

5

Step 5: Inspections

Full series from footings to final occupancy sign-off.

Frequently Asked Questions

Yes, provided it meets all building and safety codes for habitation.
Many ADUs in New Orleans use sub-meters from the main house.
Expect 8-12 weeks for a new detached ADU build.